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Articles 1 - 13 of 13
Full-Text Articles in Physics
Electromagnetic Theory And Applications, Nicholas Madamopoulos, George Kliros
Electromagnetic Theory And Applications, Nicholas Madamopoulos, George Kliros
Open Educational Resources
This book intends to provide both the fundamentals of Electromagnetics but also some practical applications of the concepts covered. Having taught electromagnetics for several years, the authors feel that many times the field of electromagnetics comes as “old” and often times students do not appreciate the concepts and their importance in everyday applications. The authors intend to accompany the EM concepts with life applications. Hence, students may see the direct impact of the knowledge they acquire through the study of the field of electromagnetics and better appreciate the field.
A Human Powered Micro-Generator For Charging Electronic Devices, John Adam
A Human Powered Micro-Generator For Charging Electronic Devices, John Adam
Senior Theses
A hand-pulled generator has been designed and tested. A preliminary result has been obtained and discussed. This device was created to provide outlet-free charging. Electronic devices are useful when going out into the wilderness. A portable power supply is necessary to keep an electronic device alive. This project created a device that converts human energy into electricity to charge electronic devices. This thesis overviews the device’s design, build, and tests. Two different tests were run to determine that the device is capable of charging the storage battery. The device presented can provide 14 minutes of charging time with one hour …
Efficacy Of Multimedia Learning Modules As Preparation For Lecture-Based Tutorials In Electromagnetism, James Christopher Moore
Efficacy Of Multimedia Learning Modules As Preparation For Lecture-Based Tutorials In Electromagnetism, James Christopher Moore
Physics Faculty Publications
We have investigated the efficacy of on-line, multimedia learning modules (MLMs) as preparation for in-class, lecture-based tutorials in electromagnetism in a physics course for natural science majors (biology and marine science). Specifically, we report the results of a multiple-group pre/post-test research design comparing two groups receiving different treatments with respect to activities preceding participation in Tutorials in Introductory Physics. The different pre-tutorial activities were as follows: (1) students were assigned reading from a traditional textbook, followed by a traditional lecture; and (2) students completed on-line MLMs developed by the Physics Education Research Group at the University of Illinois at Urbana …
Nuclear Power: Black Sky Liability Or Black Sky Asset?, Sherrell R. Greene
Nuclear Power: Black Sky Liability Or Black Sky Asset?, Sherrell R. Greene
International Journal of Nuclear Security
Ready access to abundant electricity is a key enabler of modern life. During the past decade the vulnerability of Critical Infrastructure sectors in the U.S. to a variety of natural hazards and man-made threats has become increasingly apparent. The electrical infrastructure (the “Grid”) is the foundation for all other critical civil infrastructures upon which our society depends. Therefore, protection of the Grid is an energy security, homeland security, and national security issue of highest importance. Geomagnetic disturbances (GMD) induced by solar coronal mass ejections (CMEs), electromagnetic pulse (EMP) attacks, and cyber attacks are three events having the potential to plunge …
Electric Charge, Force, And Field Problems (Practice Questions), Arun Saha
Electric Charge, Force, And Field Problems (Practice Questions), Arun Saha
Physics and Astronomy Ancillary Materials
This 33-question set was created for PHYS 1112 test practice under a Round One ALG Textbook Transformation Grant.
Charge On Luminous Bodies Resembling Natural Ball Lightning Produced Via Electrical Arcs Through Lump Silicon, Christina L. Porter, Galen P. Miley, David J. Griffiths, Erik J. Sánchez
Charge On Luminous Bodies Resembling Natural Ball Lightning Produced Via Electrical Arcs Through Lump Silicon, Christina L. Porter, Galen P. Miley, David J. Griffiths, Erik J. Sánchez
Physics Faculty Publications and Presentations
A phenomenon resembling natural ball lightning can be produced via electrical arcing through silicon. We use lump silicon instead of silicon wafers to achieve higher production rates and larger, longer-lived luminous balls than previously reported. The luminous balls consist of a silicon core surrounded by a porous network of loosely bound silicon dioxide nanoparticles. We find that the balls carry a small net charge on the order of 10−12 C and propose that the nanoparticles are electrostatically bound to the core due to this charge.
The History Of Maxwell's Equations, Lindsay Guilmette (Class Of 2012)
The History Of Maxwell's Equations, Lindsay Guilmette (Class Of 2012)
Writing Across the Curriculum
An enormous amount of technology is owed to Maxwell's theory of electromagnetism and his perseverance through cultural obstacles to advocate his talent of mathematical interpretation.
Nuclear Energy, Steve Kraft
Nuclear Energy, Steve Kraft
Native American Forum on Nuclear Issues
Abstract:
-Why Nuclear Energy?
-The lesson of the last 20 years in U.S. electricity policy:
– Diversified fuel and technology portfolio is essential
– All fuels and technologies (nuclear, coal, natural gas, renewables, efficiency) have a legitimate role
-The challenge for the future:
– Preserving/restoring diversified portfolio
– Ensuring resource adequacy, particularly in competitive markets
-Expanded use of nuclear energy is part of the answer
– Integrated used fuel management supports nuclear competitiveness
Extrapolation Of The Zα-Expansion And Two-Loop Bound-State Energy Shifts, Ulrich D. Jentschura
Extrapolation Of The Zα-Expansion And Two-Loop Bound-State Energy Shifts, Ulrich D. Jentschura
Physics Faculty Research & Creative Works
Quantum electrodynamic (QED) effects that shift the binding energies of hydrogenic energy levels have been expressed in terms of a semi-analytic expansion in powers of Zα and ln[(Zα)-2], where Z is the nuclear charge number and α is the fine-structure constant. For many QED effects, numerical data are available in the domain of high Z where the Zα expansion fails. In this Letter, we demonstrate that it is possible, within certain limits of accuracy, to extrapolate the Zα-expansion from the low-Z to the high-Z domain. We also review two-loop self-energy effects and provide an estimate for the problematic …
Actino- And Thermo- Response Of Molybdenite In Vacuo With Various Colored Lights, John H. Fulton
Actino- And Thermo- Response Of Molybdenite In Vacuo With Various Colored Lights, John H. Fulton
Master's Theses
The purposes of this investigation are to study the reaction of molybdenite cells to light of various colors while in vacuo and at various temperatures. The samples of molybdenite were also subjected to radiant heat in the last part of the experiment, which was undertaken to determine to some extent the amount of thermos-electric effect which was due to thermal radiation in the first part of the investigation.
An Investigation Of The Thermo- And Action- Electric Properties Of Molybdenite, William Otis Johnson
An Investigation Of The Thermo- And Action- Electric Properties Of Molybdenite, William Otis Johnson
Master's Theses
Considerable work has been done on various mineral substances and chemical compounds within recent years to ascertain, if possible, whether the substance possessed any degree of photo- or thermos-sensitivity; and, to determine the characteristics of these responses. Among the most prominent substances which have been tested are selenium, bismuth, antimony, hematite, stibnite, and molybdenite. It was the purpose of this investigation to summarize the phenomena that have occurred within samples of molybdenite under a variety of conditions involving heat, light, and e.m.f.
The Three-Point Gap As A Means Of Control In Instantaneous Photography, Elgin Albert Denio
The Three-Point Gap As A Means Of Control In Instantaneous Photography, Elgin Albert Denio
Master's Theses
In 1926, Wynn Williams investigated the theory of the three-point gap, which phenomenon had been known and utilized for some time but until his investigation was not understood theoretically. This investigation has been divided into two distinct parts: First, when the energy was generated by a large Toepler-Holtz station machine; and second when the energy was generated by a one-kilowatt, 25,000 volt transformer.
A Study Of The Striated Spark By The Method Of Instantaneous Photography, Laurence L. Cruise
A Study Of The Striated Spark By The Method Of Instantaneous Photography, Laurence L. Cruise
Master's Theses
In 1867 Toepler found the existence of a pulse spreading from the region around the spark immediately after it had passed. Since the density of the air in the pulse differs from that of the surrounding gas, the pulse is optically different from the rest of the field and so can be made visible by the “Shadowgraph Method.” Topeler’s work was the first of its kind where an instantaneous view, say of the order of several millionths of a second, of the electric spark was obtained. IN 1926 Dr. Zinszer, while studying the life history of the electric spark by …